Sayyiduna Uthman al-Ghani (may Allah be pleased with him) narrates: The Prophet (peace and blessings be upon him) kept me from taking part in the Battle of Badr, and he allotted a share for me. Sayyiduna Uthman (may Allah be pleased with him) said regarding the Pledge of Ridwan that the Prophet (peace and blessings be upon him) placed his right hand on his left hand on my behalf, and the left hand of the Prophet (peace and blessings be upon him) is better than my right hand.
Al-Bazzar recorded it from his teacher Abdullah bin Shabib, who is da'if (weak).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب المناقب / 14518